DBH 8681 radial shaft seal — 57.2 x 82.5 x 9.5

DBH 8681 belongs to radial shaft seal, part of our Seals range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 8681 and any equivalents.

The DBH 8681 is a radial shaft seal built to hold lubricant in and keep contamination out of rotating shaft assemblies. It carries a single main lip plus an auxiliary lip in the Mx-R-AH configuration, and its elastomer body is formulated to work with oils and greases. Three dimensions define it: shaft 57.20 mm, housing 82.50 mm, height 9.50 mm. Because the cross-section is thin, it fits where axial room is tight. Pumps, motors and gearboxes are the usual places you will find it.

Reading the designation is the fastest way to confirm a match. The first figure, 57.20 mm, is the shaft diameter the lip rides on. The second, 82.50 mm, is the housing bore. The third, 9.50 mm, is the overall width and must clear the housing depth. If your equipment tag or old seal gives those three numbers in that order, this is the part you are looking for.

The Mx-R-AH arrangement pairs a primary sealing lip with a secondary exclusion lip, so the seal works as a two-stage barrier. The main lip contacts the shaft with controlled interference to stop oil or grease from escaping; the auxiliary lip faces outward and blocks dust and particles before they reach the primary lip. The outer body is elastomer, which seats into the housing bore and holds the seal in place.

This seal suits rotating shafts running at moderate peripheral speeds. Centrifugal pumps, electric motors, speed reducers and gearboxes are common homes for it, and it also appears in power transmission hardware such as bearing supports and spindles. The auxiliary lip pays off in shops where dust or moisture is present, since it keeps that material away from the working lip.

Installation is straightforward if you take a few precautions. Verify the shaft and bore against 57.20 mm and 82.50 mm before you press anything in. Coat the lip with the same oil or grease the equipment uses, then drive the seal squarely so it does not cock in the bore. A shaft with visible wear or a groove at the lip line may need a different sealing approach, so check that surface first.

If you are cross-referencing, send code 8681 or the dimensions stamped on the old part. Our team can suggest an equivalent and help you confirm the right choice for the application. Quotes go out by WhatsApp or email once we have the part number or the equipment details.